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參數(shù)資料
型號: PCA9575PW2,118
廠商: NXP Semiconductors
文件頁數(shù): 3/38頁
文件大?。?/td> 0K
描述: IC I2C/SMBUS 16BIT GPIO 28TSSOP
產(chǎn)品培訓(xùn)模塊: I²C Bus Fundamentals
特色產(chǎn)品: NXP - I2C Interface
標準包裝: 1
接口: I²C,SM 總線
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時鐘: 400kHz
電源電壓: 1.1 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 28-TSSOP
包裝: 標準包裝
包括: POR
其它名稱: 568-6647-6
PCA9575_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 9 November 2009
11 of 38
NXP Semiconductors
PCA9575
16-bit I2C-bus and SMBus, level translating, low voltage GPIO
7.6.2 Register 1 - Input port 1 register
This register is read-only. It reects the incoming logic levels of the pins, regardless of
whether the pin is dened as an input or an output by the Conguration register. Writes to
this register will be acknowledged but will have no effect.
The default ‘X’ is determined by the externally applied logic level.
7.6.3 Register 2 - Polarity inversion port 0 register
This register allows the user to invert the polarity of the Input port register data. If a bit in
this register is set (written with ‘1’), the corresponding Input port data is inverted. If a bit in
this register is cleared (written with a ‘0’), the Input port data polarity is retained.
Table 5.
Register 1 - Input port 1 register (address 01h) bit description
Bit
Symbol
Access
Value
Description
7
IO1.7
read only
X
determined by externally applied logic level
6
IO1.6
read only
X
5
IO1.5
read only
X
4
IO1.4
read only
X
3
IO1.3
read only
X
2
IO1.2
read only
X
1
IO1.1
read only
X
0
IO1.0
read only
X
Table 6.
Register 2 - Polarity Inversion port 0 register (address 02h) bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
N0.7
R/W
0*
inverts polarity of Input port 0 register data
0 = Input port 0 register data retained (default value)
1 = Input port 0 register data inverted
6
N0.6
R/W
0*
5
N0.5
R/W
0*
4
N0.4
R/W
0*
3
N0.3
R/W
0*
2
N0.2
R/W
0*
1
N0.1
R/W
0*
0
N0.0
R/W
0*
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